 we go into austere locations, whether that's in a combat zone or even in a humanitarian think hurricane relief and earthquake and stuff like that. And so we will go in, whether that's jump in or drive in or fast rope from a helicopter or anything like that, set up airfields or set up drop zones so that resupplies can get in or so that we can land planes, get people out, like we can do rearming and refueling of the aircraft by landing them certain places using other aircraft to fuel those planes and rearm those planes and then get them where they need to go. So that's one aspect of it.